The observed brightness of a Lambertian surface may be written as the product of an albedo factor, p, and the cosine of the incident angle, cos i. This means that brightness can be written as a product of a term that depends on the material, p, and a term that depends on surface direction, which in turn depends on f and g.
| Game | Time | WPM | Accuracy |
|---|---|---|---|
| 5475 | 2017-02-09 13:48:54 | 147.40 | 100% |
| 5243 | 2017-02-03 03:13:09 | 143.07 | 100% |